N54 JB4 Full Custom Tune Worth It?

wherewuat · 03-08-2017, 06:01 PM

So I just installed catless DP's on my N54 135i and have played around with map 2 and map 5 with the JB4 G5.
What I'm wondering is, is there anyone who has gotten a custom tune or etune afterwards?
If so, were there any more significant gains than the maps that come on the JB4 that would make it worth it to get a custom tune?
Mod-wise, I'd be looking at DCI, catless DP's, VRSF Intercooler and charge pipes.

I ask this because coming from a speed3 and WRX, COBB AP OTS maps weren't shit compared to custom tunes. A custom tune would provide an additional 20+whp compared to the OTS tunes.

mike@x-ph.com · 03-10-2017, 06:29 PM

I would not pay anyone to custom tune it as this point ... Once you are FBO and/or using upgraded fuel then yes it will be worth it for extra power

ShocknAwe · 03-13-2017, 03:30 PM

Put inlets on there as well, then get Trebila to make a few custom BEF bins, I'd do one for pump, one for E30-E50, and one for E60/E70.

blue135135 · 03-13-2017, 05:20 PM

I dont know how much it would cost for a custom tune, But why not use that money for an FMIC or Inlets? adding either or both those mods will give you substantially more power than you what you have now with downpipes and jb4. I'd do a custom tune as the last thing once your already FBO, have inlets, and running ethanol mixes/meth.

03-08-2017, 06:01 PM	#1
wherewuat Enlisted Member 5 Rep 44 Posts Drives: '08 BMW 135i Join Date: Aug 2016 Location: Portland, OR iTrader: (0)	N54 JB4 Full Custom Tune Worth It? So I just installed catless DP's on my N54 135i and have played around with map 2 and map 5 with the JB4 G5. What I'm wondering is, is there anyone who has gotten a custom tune or etune afterwards? If so, were there any more significant gains than the maps that come on the JB4 that would make it worth it to get a custom tune? Mod-wise, I'd be looking at DCI, catless DP's, VRSF Intercooler and charge pipes. I ask this because coming from a speed3 and WRX, COBB AP OTS maps weren't shit compared to custom tunes. A custom tune would provide an additional 20+whp compared to the OTS tunes. Last edited by wherewuat; 03-08-2017 at 06:22 PM..
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03-10-2017, 06:29 PM	#2
mike@x-ph.com Joint Chiefs of Staff 33142 Rep 207,716 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	I would not pay anyone to custom tune it as this point ... Once you are FBO and/or using upgraded fuel then yes it will be worth it for extra power __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 725-221-5267
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03-13-2017, 03:30 PM	#3
ShocknAwe 1Addict 5381 Rep 9,254 Posts Drives: N54 E82, M57 E70, 964 C4 Join Date: Jul 2012 Location: Charleston iTrader: (22)	Put inlets on there as well, then get Trebila to make a few custom BEF bins, I'd do one for pump, one for E30-E50, and one for E60/E70. __________________ 2010 E82 1 Series M Clone Hydra Performance augmented OEM+
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03-13-2017, 05:20 PM	#4
blue135135 First Lieutenant 272 Rep 373 Posts Drives: 2008 135i M-sport Join Date: Mar 2017 Location: Richmond, Virginia iTrader: (0)	I dont know how much it would cost for a custom tune, But why not use that money for an FMIC or Inlets? adding either or both those mods will give you substantially more power than you what you have now with downpipes and jb4. I'd do a custom tune as the last thing once your already FBO, have inlets, and running ethanol mixes/meth.
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